A tooth of a pinion has a first flank extending across a face width of the tooth in an axial direction substantially parallel to a central axis of the pinion from a first axial end of the tooth to a second axial end of the tooth. The first flank has a first, convex crown profile shaped as an arc of a first circle with a first radius, and a first center of arc radius of the first flank is a point on the first flank located on a line perpendicular to the central axis of the pinion and passing through the center of the first circle. A second opposite and opposing flank of the tooth has a second, convex crown profile shaped as an arc of a second circle with a second radius, wherein a second center of arc radius of the second flank is a point on the second flank located on a line perpendicular to the central axis of the pinion and passing through the center of the second circle. The first center of arc radius of the first flank is located at approximately the midpoint of the face width of the tooth, and the second center of arc radius of the second flank is offset in the axial direction toward one of the first or second axial ends of the tooth relative to the first center of arc radius by a distance that is approximately 30-40% of the face width of the tooth.

While motors or generators stacked in series may allow for higher operating voltages, such motors or generators may also exhibit instability. To minimize instability, the motors or generators may be controlled to have an approximately equal current. An example motor system may include motor stacks connected in series, each motor stack exhibiting a respective stack voltage and a respective differential power (based on a difference in power between motors in the motor stack). A control system may average the stack voltages to generate an average stack voltage and generate a nominal stack power corresponding to each stack voltage. The control system may receive the differential powers, combine each differential power and nominal stack power for the respective motor stack to generate first and a second motor powers, and control each motor stack using the first and second motor powers.

A method for moving material efficiently using a machine with a bucket comprises determining at least one of the following variables: location of the material to be moved relative to the machine, type of material to be moved, orientation of the surface of the material to be moved, and the desired direction for moving the bucket to move the material, and changing the orientation of the bucket relative to the machine based on any one of these variables.

A bucket comprises a first attachment region, a second attachment region, and a third attachment region configured to connect to flexible members, each attachment region including a plurality of attachment points.

A bucket comprises a first attachment region, a second attachment region, and a third attachment region configured to connect to flexible members, each attachment region including a plurality of attachment points.

A retainer for fastening a pin in a pinned connection is disclosed. The retainer includes an annular first plate having a plurality of first mating features extending inwards from the annular first plate. The retainer also includes an annular compressible section adjacent the annular first plate. The annular compressible section may be coaxially aligned to the annular first plate. The retainer may also include an annular second plate adjacent the compressible section opposite the annular first plate. The annular second plate may be coaxially aligned to the annular first plate and the annular compressible section.

A retainer for fastening a pin in a pinned connection is disclosed. The retainer includes an annular first plate having a plurality of first mating features extending inwards from the annular first plate. The retainer also includes an annular compressible section adjacent the annular first plate. The annular compressible section may be coaxially aligned to the annular first plate. The retainer may also include an annular second plate adjacent the compressible section opposite the annular first plate. The annular second plate may be coaxially aligned to the annular first plate and the annular compressible section.

A dragline lip assembly comprising, a dragline lip including at least one upright member having a boss, and a wing shroud comprising. The wing shroud further comprising a first sidewall having a first abutment surface, a second sidewall having a second abutment surface wherein the second sidewall has a securing portion configured so as to be coupled to a lock assembly on the dragline lip, and a center wall having a third abutment surface provided with an opening, the center wall connecting the first sidewall and the second sidewall wherein the first, second and third abutment surfaces define a channel to receive a portion of the at least one upright member and wherein the boss is insertable in the opening.

A dragline lip assembly comprising, a dragline lip including at least one upright member having a boss, and a wing shroud comprising. The wing shroud further comprising a first sidewall having a first abutment surface, a second sidewall having a second abutment surface wherein the second sidewall has a securing portion configured so as to be coupled to a lock assembly on the dragline lip, and a center wall having a third abutment surface provided with an opening, the center wall connecting the first sidewall and the second sidewall wherein the first, second and third abutment surfaces define a channel to receive a portion of the at least one upright member and wherein the boss is insertable in the opening.

A dragline bucket assembly includes a main body, and a linkage assembly for coupling a hoist chain to the main body. The main body includes a lateral sidewall that has a top edge and a bottom edge. The linkage assembly includes a pivot attachment point provided on the lateral sidewall at a first distance from the top edge. The linkage assembly further includes an elongated link member having a first longitudinal end and a second longitudinal end spaced apart from the first longitudinal end by a length greater than the first distance. The first longitudinal end is pivotally coupled to the lateral sidewall at the pivot attachment point and the second longitudinal end is attached to the hoist chain.